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vmdk: implement .bdrv_detach/attach_aio_context() 

Implement .bdrv_detach/attach_aio_context() interfaces to propagate
detach/attach to BDRVVmdkState->extents[].file.  The block layer takes
care of ->file and ->backing_hd but doesn't know about our extents
BlockDriverStates, which is also part of the graph.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
master
Stefan Hajnoczi 2014-05-08 16:34:54 +02:00
parent 2af0b20056
commit c75f3bdf46
1 changed files with 23 additions and 0 deletions
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23
block/vmdk.c
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@ -2096,6 +2096,27 @@ static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
return 0;
}
static void vmdk_detach_aio_context(BlockDriverState *bs)
{
BDRVVmdkState *s = bs->opaque;
int i;
for (i = 0; i < s->num_extents; i++) {
bdrv_detach_aio_context(s->extents[i].file);
}
}
static void vmdk_attach_aio_context(BlockDriverState *bs,
AioContext *new_context)
{
BDRVVmdkState *s = bs->opaque;
int i;
for (i = 0; i < s->num_extents; i++) {
bdrv_attach_aio_context(s->extents[i].file, new_context);
}
}
static QEMUOptionParameter vmdk_create_options[] = {
{
.name = BLOCK_OPT_SIZE,
@ -2153,6 +2174,8 @@ static BlockDriver bdrv_vmdk = {
.bdrv_get_specific_info = vmdk_get_specific_info,
.bdrv_refresh_limits = vmdk_refresh_limits,
.bdrv_get_info = vmdk_get_info,
.bdrv_detach_aio_context = vmdk_detach_aio_context,
.bdrv_attach_aio_context = vmdk_attach_aio_context,
.create_options = vmdk_create_options,
};